By some measures Uber has been fabulously successful, coming from nowhere to the largest privately held company in seven years, and now a $70 billion g/publicly traded/private/ company. Uber has done a stunning job of disrupting a crony-capitalist, monopolistic system. If they are still searching for a way to make a profit, surely they'll figure it out before long. * updated to remove publicly traded
It's easy to disrupt a crony-capitalist, monopolistic system by selling your product at a loss, but you can't make a profit that way.
Source: http://www.nakedcapitalism.com/2016/11/can-uber-ever-deliver...
Uber actually makes money on each ride - it's just that the gross profit from those rides is short of covering its operating expenses. 12,000 employees are not inexpensive.
Based on these financials, if Uber halted most software development and halted subsidies into underdeveloped markets, it seems quite plausible the company would become profitable. Investors might not recoup their whole investments, but the company in zombie could earn back some profits.